docs: def itemInfoUpload(self, folder, filePath):
          """
          Allows for the upload of new itemInfo files such as metadata.xml
          Inputs:
             folder - folder on ArcGIS Server
             filePath - full path of the file to upload
          Output:
             json as dictionary
          """
          files = {}
          url = self._url + "/iteminfo/upload"
          params = {
              "f" : "json",
              "folder" : folder
          }
          files['file'] = filePath
          return self._post(url=url,
                            param_dict=params,
                            files=files,
                            securityHandler=self._securityHandler,
                            proxy_url=self._proxy_url,
                            proxy_port=self._proxy_port)